If anything happens on our Sun, Mercury is going to know about it first, right? Well it is the smallest and closest to the Sun and in Greek legend Mercury is the messenger of the Gods. Well something does happen and mercury warns all the other planets in our family of 8 planets called the solar system.
This is an introduction to the Solar system. Carmen Gloria personifies all the planets, gives them a face and a character and through this technique helps with a study of our family of planets.
Well illustrated with chunks of information for readers at junior level. It is fun.

"One of the Best New Space Books 2019" - Book Authority

This vibrant inter-planetary picture book sees mini Mercury, the smallest planet closest to the sun, fulfill his mythical job as a messenger when he warns his fellow planets that a sun storm is approaching. 

Mercury's message makes its way to each planet in turn - loving Venus, lively Earth, warrior Mars, giant Jupiter (who "farts a lot", due to being such a gaseous planet!), singing Saturn, ice-giant Uranus, before finally reaching freezing Neptune. Thanks to Mercury's thoughtful warning and the planets' varied ways of preparing for it, everyone stays safe from the storm. 

The story imparts an underlying message of friendship and support through the entertaining and educational personification of the planets, and the page of planet-themed questions at the back is a great extra. All in all, this is a fun way to introduce 4+ year-olds to the solar system.

Author-illustrator Carmen Gloria shines a spotlight on the smallest, fastest, and innermost planet in the solar system, Mercury, while also introducing the 7 additional planets that orbit the sun. Mercury is known as the messenger in both astrology and mythology, and in Thank You, Mercury, this tiny and curious planet has the job of notifying all of the other planets that a sun storm is on the way. In this picture book blend of fiction and non-fiction, the planets each receive this important message and stay safe through the storm.

As Mercury's message of the sun storm travels through space, readers meet Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune--with Pluto receiving an honorable mention. Through brief conversation with the planets we learn about some of their unique traits. Humor is added, too; such as when Jupiter is described as a gas giant with over 70 moons: "He farts a lot, but his many moons and the other planets are used to it." Basic questions and answers are provided in the informative back matter of the book, covering the learning elements provided within the pages of the story. "Which planet has the most moons? Jupiter."

Side note: Along with her love of space, it is highly possible that the author has a love of candy, as the text includes a few sweet shout-outs to gummy bears and chocolate.

While focusing on one planet, Carmen Gloria provides a quick and snappy intro to the solar system as a whole, that will surely provide a little fun for budding galactic astronomers, planetary astronomers, stellar astronomers, and solar astronomers--also known as kids who love all things "space" related.